2065603345 has 24 divisors (see below), whose sum is σ = 2687798592. Its totient is φ = 1523246400.

The previous prime is 2065603339. The next prime is 2065603363. The reversal of 2065603345 is 5433065602.

It is a de Polignac number, because none of the positive numbers 2^k-2065603345 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2065603345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 870010 + ... + 872380.

It is an arithmetic number, because the mean of its divisors is an integer number (111991608).

Almost surely, 2^2065603345 is an apocalyptic number.

It is an amenable number.

2065603345 is a deficient number, since it is larger than the sum of its proper divisors (622195247).

2065603345 is a wasteful number, since it uses less digits than its factorization.

2065603345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433 (or 3420 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 2065603345 is about 45448.9091728283. The cubic root of 2065603345 is about 1273.5489518106.

Adding to 2065603345 its reverse (5433065602), we get a palindrome (7498668947).

The spelling of 2065603345 in words is "two billion, sixty-five million, six hundred three thousand, three hundred forty-five".